Online appointment scheduling tool with features include 2-way sync with external calendars, automated email/SMS reminders and follow-ups, integrate into your website, etc.

When you want users to:
1. Schedule one on one meetings with you
2. When you want to coordinate multiple schedules automatically (like you need person A& person B available simultaneously, and person C as optional member)
3. Schedule resources
4. Schedule group events like classes, events and workshops
5. Schedule multiple resources like conference rooms